| genetic variation in the invasive process of bursaphelenchus xylophilus (aphelenchida: aphelenchoididae) and its possible spread routes in china. | pinewood nematode (bursaphelenchus xylophilus) is an invasive species that causes a destructive forest disease-pine wilt disease. this disease has been prevalent in some countries in asia since the 1970s. an amplified fragment length polymorphism survey was used to compare the genetic variation of native and invasive nematode populations in china and to examine the changes in genetic diversity during the invasion process. the genetic diversity of chinese populations was slightly higher than that ... | 2008 | 18091770 |